Ha Long Bay (also "Halong Bay" is in northern Vietnam, 170 km (105 mi) east of Hanoi. The bay is famous for its scenic ocean karst topography and is often included on lists of natural wonders of the world, including the UNESCO World Heritage list.

The Ha Long Bay archipelago is made up of 1,969 islands, both inhabited and uninhabited. These can be accessed from various ports, though in the special case of Cat Ba you can also arrive either by car, motorbike or bus (via Haiphong) or combined bus/boat (from Hanoi via Halong City).

- Wikivoyage